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dc.contributor.authorSteeb, J.
dc.contributor.authorDavidson, David
dc.contributor.authorWijnholds, S.
dc.date.accessioned2018-12-13T09:12:55Z
dc.date.available2018-12-13T09:12:55Z
dc.date.created2018-12-12T02:47:14Z
dc.date.issued2018
dc.identifier.citationSteeb, J. and Davidson, D. and Wijnholds, S. 2018. Computationally Efficient Radio Frequency Source Localization for Radio Interferometric Arrays. Radio Science. 53 (3): pp. 242-256.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/72266
dc.identifier.doi10.1002/2017RS006513
dc.description.abstract

©2018. American Geophysical Union. All Rights Reserved. Radio frequency interference (RFI) is an ever-increasing problem for remote sensing and radio astronomy, with radio telescope arrays especially vulnerable to RFI. Localizing the RFI source is the first step to dealing with the culprit system. In this paper, a new localization algorithm for interferometric arrays with low array beam sidelobes is presented. The algorithm has been adapted to work both in the near field and far field (only the direction of arrival can be recovered when the source is in the far field). In the near field the computational complexity of the algorithm is linear with search grid size compared to cubic scaling of the state-of-the-art 3-D MUltiple SIgnal Classification (MUSIC) method. The new method is as accurate as 3-D MUSIC. The trade-off is that the proposed algorithm requires a once-off a priori calculation and storing of weighting matrices. The accuracy of the algorithm is validated using data generated by low-frequency array while a hexacopter was flying around it and broadcasting a continuous-wave signal. For the flight, the mean distance between the differential GPS positions and the corresponding estimated positions of the hexacopter is 2 m at a wavelength of 6.7 m.

dc.publisherBlackwell Publishing Ltd
dc.titleComputationally Efficient Radio Frequency Source Localization for Radio Interferometric Arrays
dc.typeJournal Article
dcterms.source.volume53
dcterms.source.number3
dcterms.source.startPage242
dcterms.source.endPage256
dcterms.source.issn0048-6604
dcterms.source.titleRadio Science
curtin.departmentCurtin Institute of Radio Astronomy (Engineering)
curtin.accessStatusFulltext not available


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